ArecaVSS - The Volume Shadow Copy plugin for Areca-Backup

Item #31 - VSS not working in more complex setup [Closed - Unresolved]

Hi there, I get a VSS error which I cannot track via google what's going wrong, or I haven't searched enough.

My system is a bit more complex and as follows:
-Running an iMac with Hybrid Drive and Windows 7 x64 installed (via bootcamp, shouldn't matter as I'm not backupping the device, but sometimes strange Mac issues appear which shouldn't matter but cause evil, so I state it out beforehand just to be sure that you have all data)
-Having an old SSD put in an USB 3.0 Case and plugged in to the computer.
-The SSD filesystem is NTFS, on it is a truecrypt container (also NTFS) which I want to backup into another truecrypt container, both mounted.
So before my backup job starts, I mount my source filesystem in NTFS to lets say L: and mount another TrueCrypt Container from a USB Stick to lets say P:
Afterwards, I invoke ArecaVSS.
I have also tried to place my source container on an USB Stick, but found out that VSS for windows ain't work for USB Sticks, thats why I placed the SSD in a cage and wanted to use it.

TrueCrypt is known to have limited support of Microsoft's Volume Shadow Copy technology - see for instance http://www.truecrypt.org/docs/issues-and-limitations
Is VSS mandatory to backup your encrypted drive ?

ArecaVSS staff - 2013-10-19 15:51

Extract from http://www.truecrypt.org/docs/issues-and-limitations :
"The Windows Volume Shadow Copy Service is currently supported only for partitions within the key scope of active system encryption (e.g. a system partition encrypted by TrueCrypt, or a non-system partition located on a system drive encrypted by TrueCrypt, mounted when the encrypted operating system is running). Note: For other types of volumes, the Volume Shadow Copy Service is not supported because the documentation for the necessary API is not available."